[DOCS] Fullscreen docs omit live "Thinking for Ns" timer and interrupt persistence

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://code.claude.com/docs/en/fullscreen

Section/Topic

What changes in fullscreen rendering, with a cross-reference from interactive interrupt behavior

Current Documentation

The fullscreen page currently says:

Fullscreen rendering changes how the CLI draws to your terminal. The input box stays fixed at the bottom of the screen instead of moving as output streams in. If the input stays put while Claude is working, fullscreen rendering is active. Only visible messages are kept in the render tree, so memory stays constant regardless of conversation length.

The interactive mode page currently says:

Esc | Interrupt Claude | Stop the current response or tool call mid-turn so you can redirect. Claude keeps the work done so far

In the v2.1.152 changelog, Claude Code also says:

In fullscreen mode, the "Thinking for Ns" indicator now counts up live while the model is thinking, and keeps its value if you interrupt mid-thought

What's Wrong or Missing?

The stable docs describe fullscreen rendering at a high level and document Esc interruption, but they do not document the user-visible thinking timer behavior that shipped in v2.1.152.

Specifically, the docs do not tell users that in fullscreen mode:

A. The Thinking for Ns indicator counts up live while Claude is still thinking.

B. If the user interrupts with Esc mid-thought, the displayed thinking duration is preserved instead of disappearing or resetting immediately.

This leaves the behavior discoverable only through the changelog, not through the feature docs users are likely to read when learning fullscreen rendering or interruption behavior.

Suggested Improvement

Add a short note to https://code.claude.com/docs/en/fullscreen under What changes or a small status/feedback subsection.

Suggested wording:

During extended thinking in fullscreen mode, Claude shows a Thinking for Ns status indicator that updates live while the model is reasoning. If you interrupt mid-thought with Esc, the displayed duration is preserved so you can see how long that thinking burst lasted.

Optionally add a short cross-reference from https://code.claude.com/docs/en/interactive-mode near the Esc row noting that fullscreen mode preserves the visible thinking duration when interrupted during a thinking phase.

Impact

Medium - Makes feature difficult to understand

Additional Context

Affected Pages:

| Page | Line(s) | Context |
|------|---------|---------|
| https://code.claude.com/docs/en/fullscreen | 33-35 | Explains fullscreen behavior changes but not the live thinking timer |
| https://code.claude.com/docs/en/interactive-mode | 39 | Documents Esc interruption without the fullscreen thinking-timer outcome |
| https://code.claude.com/docs/en/changelog | 27 | v2.1.152 release note describing the missing behavior |

Total scope: 3 pages affected/relevant

This appears to be a docs gap for behavior introduced in v2.1.152.